#include <bits/stdc++.h>
using namespace std;

int main() {
    int N, K; cin >> N >> K;
    if(N - 1 == K || K == 1) {
        cout << "No";
        return 0;
    }
    if((N - 1) % K == 0) {
        if(K == 2) {
            cout << "No" << "\n";
            return 0;
        }
        cout << "Yes" << "\n";
        for(int i = 0; i < K - 1; i++) {
            cout << i + 1 << " " << i + 2 << " ";
            if(i == K - 2) {
                cout << -5001*(K - 1) - 1 << "\n";
            }
            else {
                cout << 5001 << "\n";
            }
        }
        for(int i = K - 1; i < N - 1; i++) {
            cout << K << " " << i + 2 << " ";
            cout << 5001 << "\n";
        }
    }
    else {
        cout << "Yes" << "\n";
        for(int i = 0; i < N - 1; i++) {
            cout << i + 1 << " " << i + 2 << " ";
            if(i%K == K - 1) {
                cout << -5001*(K - 1) - 1 << "\n";
            }
            else {
                cout << 5001 << "\n";
            }
        }
    }
}